baber/WOPTO huggingface dataset:
Patent GB-2154341-A (GB)
Title: Control apparatus for the wireless power adjustment of flash-light units
Inventor: HAUSER HANS-PETER
IPC: G03B15/05
Filed: 1984-12-21
Abstract: The invention relates to a control apparatus for the wireless remotely controlled power adjustment of flash-light units (4a to 4d), in which a light measuring probe (7) is connected to a control centre (1) of the apparatus, whereof the reported actual value of the light is compared with a reference value of the light derived from the sensitivity of the film and the selected aperture and that according to the differential value therebetween, the control centre (1) varies the power level of all the flash-lights (4a to 4d) independently so that the actual value corresponds to the reference value. In this way the manual adjustment of the power level is dispensed with, so that the photographer standing behind the camera (6) need solely initiate a trial flash, whereupon the control centre (1) adjusts all the flash-lights (4a to 4d) to the required power level in readiness for taking a photograph. <IMAGE>
Patent GB-2155000-A (GB)
Title: Production of high purity alumina
Inventor: CAMBRIDGE EDWARD L
IPC: C01F7/306
Filed: 1984-08-01
Abstract: A process for the formation of high purity alumina from Bayer Process alumina trihydrate (gibbsite). The solid hydrated alumina is reacted with concentrated HCl to cause partial or complete conversion to aluminum chloride hexahydrate (ACH). The ACH or mixture of ACH and unreacted hydrated alumina is recovered as a solid and calcined in a single or multistage calcination to high purity alumina. Soda contents in the product anhydrous alumina can be reduced by 98% or greater. Contents of other impurities, such as silica, iron, magnesium, etc., are also markedly reduced. Different degrees of impurity reduction can be obtained by controlling the degree of conversion of the hydrated alumina to ACH and by recycling and treating the acid after solid/liquid separation. The purified products find use in the speciality ceramics field, as catalyst supports, as adsorbents, in electronic components, in prosthetic devices or other applications in which alumina of controlled degrees of purity offers an advantage.
Patent GB-2160001-A (GB)
Title: Display device
Inventor: WINEBLOOM JOHN HOWARD
IPC: G09F21/04
Filed: 1985-04-01
Abstract: A display device suitable for use in association with a central boss of a wheel comprises a first optically transparent disc 1 which masks a second disc 3 which is adjacent said first disc, is rotatable relative thereto and is adapted to display artwork, the second rotatable disc being eccentrically weighted at 6 such that when suspended in a substantially vertical plane in a chamber 2 and allowed to equilibrate, it will always adopt substantially the same position relative to the vertical axis. The chamber 2 is filled with damping fluid such as liquid paraffin. The device is of particular application to the motor vehicle industry for displaying a manufacturer's trademark at the centre of the vehicle wheels in a way in which the trademark will always appear the right way up. <IMAGE>
Patent GB-2159188-A (GB)
Title: Self priming siphon device
Inventor: NORMAN FRANCIS GEORGE
IPC: F04F10/00
Filed: 1985-05-17
Abstract: A self priming siphon device comprises an inverted U-pipe having an inlet pipe and an outlet pipe with an automatic non-return air valve. The pipe may also contain a non-return liquid valve or be associated with a foot valve. The device is useful for draining bilge from boats or for draining tanks, ponds or troughs.
Patent GB-2178816-A (GB)
Title: Construction of frame joints
Inventor: FORREST DONALD WILLIAM
IPC: E04B1/26
Filed: 1985-05-23
Abstract: Joints in wooden framework constructions, particularly post and beam constructions of the type shown in specification GB-A-2104612, are improved by the addition of tapered sections. Symmetrical tapered sections forming dovetails may be used. <IMAGE>
Patent GB-2163592-A (GB)
Title: Music teaching instrument
Inventor: CHAN YAM HONG
IPC: G09B15/02
Filed: 1985-08-22
Abstract: A music teaching instrument involves the use of a microprocessor 30 to control the centre frequency of a high-Q tunable bandpass filter 24. As a musical sound passes through this filter, only the component of the signal with this centre frequency is seen at the output. Each incoming signal has a fundamental frequency. The output of the filter with its centre frequency at the fundamental frequency of the incoming signal will have a peak value compared to that at surrounding frequencies despite the fact that the incoming signal may be very weak at its fundamental frequency. Such a peak can be detected by sweeping the centre frequency of the bandpass filter through a range of frequencies and then reading the value of an amplitude detector 35 connected to the output of the filter. The amplitude detector rectifies the output from the filter and then smooths out the peaks to give an indication of the maximum amplitude of the filter output at each frequency. The microprocessor reading the values will be able to tell the frequency at which the filter output is a maximum compared to that at surrounding frequencies. Displays 32 display the musical note which the musical sound is closest to, and also an indication of how close to that note the musical sound is. <IMAGE>
Patent GB-2170047-A (GB)
Title: Decoupling capacitor for pin grid array package
Inventor: LOCKARD STEVEN C
IPC: H01G2/12
Filed: 1986-01-21
Abstract: High frequency noise is decoupled from power supplied to a Pin Grid Array (PGA) package (56), carrying an ic, by insertion of a decoupling capacitor (52) between the PGA package and printed circuit board (54). The decoupling capacitor (52) comprises a dielectric material sandwiched between a pair of conductors and having a plurality of leads (58) extending from each conductor. In accordance with the present invention, the decoupling capacitor is individually dimensioned and configured to fit under a PGA package and correspond to the power and ground pin configuration of that PGA package. The capacitor leads either enter holes in the pcb shared with leads of the PGA, enter non-shared holes or leads of the PGA pass through apertures in the capacitor leads. The PGA comprises a pinned substrate carrying an i/c, and pins directly into the pcb or into a matching socket that mates with the pcb. <IMAGE>
Patent GB-2186765-A (GB)
Title: Data display apparatus
Inventor: BAKER STEPHEN JOHN
IPC: G09G5/24
Filed: 1986-02-17
Abstract: A data display apparatus which provides bit-map text displays on CRT monitor may have a memory in which is stored a number of different character fonts. For large character sizes, the amount of storage capacity which is required can become excessive when character data is stored in a bit-map form which corresponds to the image and size of the character shape as displayed. In order to reduce the amount of storage required, apart from reducing character size and number it is known to use scaling algorithms to display characters from a single font in different heights and widths. However, this can result in crude character shapes of low resolutions. The present invention provides for the storage of character data in run-length coded bytes, of which certain bits pertain to character colour and the remainder of the bits pertain to run-length. This enables a large number of character fonts to be stored economically on a floppy disc or the like which can be accessed directly to provide the display in 'real-time'. The single Figure exemplifies a data display apparatus to which the invention can be applied. <IMAGE>
Patent GB-2172607-A (GB)
Title: Rinse aid composition
Inventor: MURPHY BRENDAN G
IPC: C11D1/10
Filed: 1986-03-18
Abstract: A rinse aid composition for use in association with mechanical type dishwashers comprises effective amounts of:     i) a quaternary ammonium compound; ii) a hydrophilic polymer consisting of a nonionic hydrophilic polymer having a molecular weight from 30,000 to 1,500,000, a cationic hydrophilic polymer having a molecular weight of 1,000 and up, or a mixture thereof; and   iii) an amphoteric surfactant.   The composition, when used in a rinse solution, is present in amounts of 100 to 200 parts per million.
Patent GB-2173959-A (GB)
Title: Recoverable fabric article
Inventor: PITHOUSE KENNETH BRIAN
IPC: F16L47/22
Filed: 1986-04-05
Abstract: A recoverable article comprises a fabric having zones of different or uniformly varying recovery forces or ratios. The fabric can be made impervious, used for environmental protection, and provided in the form of a sleeve 3 round the junction of a cable, pipe or other supply line. Zones A-C of differing recovery accommodate differences in the size and shape of the cable splice shown. A liner (not shown) may be employed. <IMAGE>
Patent GB-2190930-A (GB)
Title: Fabric spreading and cutting
Inventor: GERBER HEINZ JOSEPH
IPC: B26F1/38
Filed: 1986-05-28
Abstract: A programmable fabric cutting apparatus comprises a table 14 having a fabric supporting surface 16, a fabric spreader 36 having a fabric supply roll S and movable to and fro longitudinally relative to the table 14 to spread a fabric F, as it is dispensed from the roll S by drive means 46, on the surface 16, a variable frequency vibrator 58 for vibrating at varying frequencies a portion of the fabric to relieve fabric stresses as the fabric F is dispensed in order to be spread, and a rotary cutting device 20,24 for cutting predetermined portions off the fabric in response to command signals from a programmable controller 22. The cutting device 20,24 is mounted on a carriage 18 for transverse movement relative to the longitudinal table 14 and the carriage 18 carries the devices 20,24 to and fro longitudinally of the table 14. The movement of the spreader 36, the dispensing of the fabric F and the movement of the cutting device 20,24 are in response to command signals received from the controller 22. <IMAGE>
Patent GB-2180098-A (GB)
Title: Releasable handle assemblies
Inventor: RUSHTON ALEC
IPC: H01H9/22
Filed: 1986-07-14
Abstract: A handle assembly (e.g. for a switch fuse) is mounted on an access cover and incorporates means 13 for engaging an actuating member when the access cover is closed, and an intermediate separately rotatable member 7 which normally secures the handle unit against withdrawal from the actuating member in a first position of the handle whilst permitting its release in a second position of the handle, but which can be rotated against a spring after release of locking means 32 into a position which permits withdrawal of the handle unit 13 when in said first position or alternatively prevents its withdrawal when in the second position. <IMAGE>
Patent GB-2179360-A (GB)
Title: Aqueous developable photopolymer compositions
Inventor: WHELAN JR WILLIAM P
IPC: G03F7/033
Filed: 1986-08-08
Abstract: An aqueous developable photopolymerizable composition for use in the manufacture of flexographic printing plates which comprises an admixture of:     (A) carboxylated poly(butadiene-acrylonitrile) elastomer;   (B) chlorosulfonated polyethylene;   (C) ethylenically unsaturated crosslinking agent; and (D) photopolymerization initiator activatable by actinic radiation.     Generally, the (A)/(B) weight ratio is 75/25-40/60; the concentration of (C) is 2-40 parts per 100 parts of (A) plus (B); and the concentration of (D) is 0/01-10 parts per 100 parts of (A) plus (B); all by weight.
Patent GB-2196892-A (GB)
Title: Fixing components on shafts
Inventor: CHILD ROBIN EDWARD
IPC: B23K20/12
Filed: 1986-11-05
Abstract: A pump rotor is fixed on its shaft by spin welding using apparatus as shown in the drawing. The shaft is spun up to speed and then displaced axially to engage the shaft in the bore of the rotor which is held stationary. When the shaft "seizes" to the rotor, the torque limit coupling disengages the drive.
Patent GB-2202337-A (GB)
Title: Hall effect meters
Inventor: SHAHBAKHTI FERIBORZ
IPC: G01R21/08
Filed: 1987-02-05
Abstract: In a Hall effect meter for measuring energy passing along a conductor (1), a circuit (4) for supplying current to a Hall probe (3) comprises means (12, 13) for reversing the current to the probe. A measuring circuit (5) stores the outputs for the two current directions, and one value is subtracted from the other to obtain an output independent of self-field effects. The output when the probe is shorted may be subtracted from the output when it is not shorted to eliminate drift effects (Fig. 4 not shown). The current through the probe can also be increased (Figs. 5, 6 not shown) to compensate for temperature. A stabilising system (Fig. 7 not shown) maintains the temperature of the Hall effect device substantially constant. <IMAGE>
Patent GB-2203549-A (GB)
Title: Metal corrosion detection
Inventor: CARROLL JULIAN MARSDEN
IPC: G01N27/82
Filed: 1987-04-15
Abstract: Apparatus is described for corrosion detection, especially detection of corroded wall ties. An array of Hall effect sensors (10) is linked by the magnetic field of a permanent magnet and the output from the sensors are multiplied by devices (30, 32, 34, 36, 44) and amplified by amplifier (42) to drive a meter supply (46). The patterns of voltages generated within the array of sensors differ between the situation where the field of the permanent magnet is substantially undisturbed, where it is disturbed by the presence of a sound wall tie, and where it is disturbed to a lesser extent by the presence of a corroded tie, due to the reduced ferrous content of a corroded tie. In a method of detecting corroded wall ties, a unit having the array of Hall effect sensors and the permanent magnet is positioned adjacent a wall with the magnet more remote from the wall than the sensors and the unit is moved to a wall position at which the sensors exhibit a voltage pattern, and a reference signal is generated by processing the sensor voltage. The unit is then moved to a position at which the sensors exhibit a different voltage pattern and the sensor voltages are again processed to establish a measurement signal, and the reference signal and measurement signal are compared.
Patent GB-2230347-A (GB)
Title: Multi-spectral transmission coatings
Inventor: WALLAND PAUL WILLIAM
IPC: G02B1/00
Filed: 1987-05-15
Abstract: A lens or window having resistance to erosion or rain impact comprises a substrate transparent to radiation in at least two spectral wavebands (visible, near infra-red, 3-5  mu m, 8-14  mu m, microwave) and coatings 11, 12 thereon transmissive in different ones of the two bands. Coatings 11, 12 may be partially yttria-stabilised zirconia and germanium-carbon, on a zinc sulphide substrate. Anti-reflection coatings 14 can be provided. If zone plates or a halographic plate window are used, specifically sensitive detectors appropriately located behind the lens or window may detect and differentiate between the transmitted radiations. The coating 11, 12 may be formed on opposing faces of each adjacent pair of teeth on a saw-tooth substrate. <IMAGE>
Patent GB-2192763-A (GB)
Title: Analog-to-digital converter for a camera
Inventor: SEKI YOUICHI
IPC: G03B7/08
Filed: 1987-07-10
Abstract: An analog-to-digital converter for a camera has a reference signal generating element, a measurement signal generating element, and pulse output means for generating pulses of pule durations corresponding respectively to signals from the generating elements. The generating elements are alternately selected to produce two pulse durations, and the ratio of these two durations is computed by pulse duration ratio computing means. Control information corresponding to the computed ratio is retrieved from memory means.
Patent GB-2211467-A (GB)
Title: Illuminated signs for advertising/display
Inventor: HARRIS RONALD
IPC: G03G7/00
Filed: 1987-10-23
Abstract: A method of producing translucent or transparent plates or cards bearing matter for display by back illumination ("transparencies") consists in reproducing the matter on a sheet of tracing paper using a commercially available photocopier, and subsequently laminating the sheet of tracing paper with the matter thereon between plastics films using a commercially available document laminating machine.
Patent GB-2220606-A (GB)
Title: Hand tools
Inventor: BASISTA JACEK LECH
IPC: B26B13/26
Filed: 1988-07-13
Abstract: A hand tool has two jaws, which may be cutters and which are pivotally interconnected, each jaw having a respective member extending beyond the pivot, and a force amplifying lever which is pivotally connected to one of the members at a point remote from the jaws and is so coupled to the other member that, upon pivotal movement of the force amplifying lever relative to the one member, the jaws are moved relative to one another.
Patent GB-2222661-A (GB)
Title: Tap handle
Inventor: LAFRENAIS PAUL MICHAEL
IPC: F16K31/60
Filed: 1988-09-13
Abstract: A tap handle comprises an inner part 12 adapted to be clamped onto the spindle S of a tap and an outer part 11 adapted to fit over the inner part 12 and engage same to enable the inner part 12 to be turned. The inner part 12 may be adapted to grip a tap spindle of any diameter within a range thereof and has an axially slotted, tapered, threaded region for cooperation with a nut having a threaded, tapered bore to clamp the inner part 12 against the spindle S. <IMAGE>
Patent GB-2209727-A (GB)
Title: Ornithopter
Inventor: MCVEY FRANCIS JOHN
IPC: B64C33/02
Filed: 1988-09-15
Abstract: The ornithopter has at least one wing 2 pivotally interconnected with a support 3, said wing being articulated and adapted to be adjustable by an operator so as to achieve a first attitude (Figs 2, 4) wherein the wing's leading edge is substantially linear in a first view and substantially bowed in a second view and so as to achieve a second attitude (Figs 3, 5) of a narrower wing span wherein the leading edge is substantially Z-shaped in both first and second views. The wing is multi-sectional, having an elbow "A" and wrist "B" joint being hinged to form a compound cantilever. The narrowing of the wing span on flexion is accommodated by the articulation of the wing wherein the elbow joint of the wing slides backwards and the wrist joint moves forward relative to the support of the device and, on wing extension the moves are reversed. <IMAGE>
Patent GB-2224477-A (GB)
Title: A device for shortening a flexible elongate load-supporting member
Inventor: SANDLE DEREK WILLIAM
IPC: B66C1/18
Filed: 1988-10-28
Abstract: A device (2) Fig 7 for shortening a flexible elongate load-supporting member (4), which device (2) comprises first and second side members (6, 8) Fig 1 which are spaced apart by a spacer member (10, 12), a first aperture (14) in the first side member (6), a second aperture (8) in the second side member (16), a rotatable member (18) which is locatable in the first and the second apertures (14, 16), and fastener means (20) on the rotatable member (18) for receiving a part of the load-supporting member (4), the device (2) being such that the rotatable member (18) is rotatable to take up slack in the load-supporting member (4), and is lockable in position in the first and the second apertures (14, 16) when the slack in the load-supporting member (4) has been taken up and when it is desired to lift an object (22) with the load-supporting member (4). <IMAGE>
Patent GB-2226901-A (GB)
Title: Alarm system
Inventor: CLEETON AUSTEN
IPC: G08B25/06
Filed: 1989-01-10
Abstract: An alarm system comprises a modular network which utilises the electrical mains wiring of the building to transmit digital information between various parts of the system, the network including an alarm device disposed outside the building and also coupled to the mains wiring circuit for receiving its alarm trigger instructions.
Patent GB-2227048-A (GB)
Title: Spring clips for suspending objects between angled wall surfaces
Inventor: HOLBERTON BERNARD VICTOR
IPC: F16B2/22
Filed: 1989-01-14
Abstract: The spring dip for suspending e.g. a decorative trimming (Christmas decoration) 8, between two angled wall surfaces 7 comprises pointed ends 3 for engaging each of the wall surfaces 7, and, between the ends 3, a resilient biasing arrangement comprising, as shown two bow-shaped portions 4 and a U-shaped portion 2 which is resiliently compressed when the clip 1 is fitted between the wall surfaces 7 with the ends 3 engaging the wall surfaces 7 and which subsequently exerts gripping forces tending to maintain the ends 3 in engagement with the wall surfaces 7. In Figure 2 U-shaped portion 2 is formed with a hook 9 from which the decoration 8 is hung. The clip enables decorations to be hung without leaving marks on the wall. In the embodiment of Figure 3, hook 9 is dispensed with and trimmings 8, 12 are supported as shown. Clip may be partly/wholly of wire or plastics material. <IMAGE>
Patent GB-2227206-A (GB)
Title: Thermal protection spark arresting blanket
Inventor: SADLER MARK BERNARD
IPC: F16P1/06
Filed: 1989-01-23
Abstract: The blanket incorporates a core of glass tear resistant cloth (1) with a layer of needled glass felt (2) (3) having a melting point high enough to resist complete thermal breakdown, but low enough to partially melt causing hot metal globules for a welding cutting or fettling operation to be encapsulated or arrested. <IMAGE>
Patent GB-2220885-A (GB)
Title: Press felt
Inventor: NYBERG ESKO
IPC: B32B7/02
Filed: 1989-06-08
Abstract: A press felt (4) for transporting a fibre web (3) through the press section of a paper machine and for receiving water from the fibre web (3), the press felt (4) comprising at least one fabric layer and a surface layer on both sides of the felt (4) the air permeability of both surface layers (5) and (7) being substantially smaller than that of the fabric layer (4). In order to make the removal of water more efficient and to avoid the rewetting of the web, the air permeability of the rear side surface layer is substantially smaller than the air permeability of the surface layer on the side of the web. <IMAGE>
Patent GB-2236364-A (GB)
Title: Automatic transmission comprising planetary gearing and braking pumps
Inventor: WU CHENG HSIUNG
IPC: F16H3/72
Filed: 1989-08-16
Abstract: An automatic transmission, includes two planetary gears 10 and 20, two braking pumps 30 and 40, at least one flow control valve and an oil path system provided therebetween for obtaining a continuously variable transmission (CVT). Each ring gear 16 and 26 of the planetary gears 10 and 20 is connected to each rotor shaft 32 and 42 of the two braking pumps 30 and 40, respectively. A sensing means, preferably a centrifugal pump, 50 is provided for sensing a rotation speed of a rear propeller shaft 4 and to output various amounts of pressurised working fluid in response to the rotation speed of the rear propeller shaft 4. The first flow control valve is provided on the oil path system and is controlled by the pressurised working fluid to be closed to various extents so as to reduce the flow within the oil path system. The rotation speeds of each braking pump 30 and 40 together with each ring gear 16 and 26 are also reduced, under extreme conditions the pumps 30 and 40 even stop. Reverse may be provided by engaging a positive claw brake to stop the planet carrier (18). <IMAGE>
Patent GB-2224570-A (GB)
Title: Measuring the flash duration of a flash gun
Inventor: BERNHARD JEAN-FRANCOIS
IPC: G01J1/42
Filed: 1989-09-15
Abstract: The instantaneous light intensity is converted into an electrical signal, the peak of this signal is determined and stored, the signal is also delayed by the time that lies between the beginning of the flash curve and its maximum, the stored maximum is compared with the delayed signal and the flash duration is determined from the signal value obtained. The information concerning the ascending branch of the intensity flash duration curve is thus available at the maximum of this curve. The device has a measuring cell 3 for the flash intensity, connected in series with which there is a time-delay element 6 and a peak value detector 7, the outputs of which are connected to a comparator 14 whose output is connected to a time measuring circuit (15). 
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